If you experience excessive engine noise on startup (after the engine has been turned off for several hours) that lasts for more than five or six seconds, turn off the engine and check that the engine oil level is correct. If the oil level is correct, the noise may be caused by the timing chain tensioner. Hyundai has an improved tensioner to correct this problem.
Car Problem Reports
Hyundai Azera Improved Timing Chain Tensioners Available to Correct Noise on Startup
Hyundai Azera Problem
Average Mileage: 44,106 mi (20,532 mi - 85,000 mi)
Visitor, 2009 Hyundai Azera, 49,000 mi
Visitor, 2007 Hyundai Azera, 20,532 mi
Tapping sound on startup. Noise gradually goes away in 30 to 45 seconds of driving. Timing chain tensioner was replaced at 34212 miles. Repairs seemed to fix problem. Then after 500 miles tapping sound has come back. Problem not fixed, in fact as I type this my Azera is sitting in dealership garage. Dealership now says they will not fix it clamming the sound is normal. Can you believe that?
Visitor, 2006 Hyundai Azera, 85,000 mi
Car is new to us, and is in Perfect condition except for that.
Visitor, 2006 Hyundai Azera, 35,000 mi
Dealer fixed it under warranty. No charge, except for the oil refill, even though the oil interval had not reached the time to change it.
Visitor, 2006 Hyundai Azera, 31,000 mi
noisy whin related to RPM accereation. New tensioner pully put in--noise gone